#!/usr/bin/env node

const stdin = process.stdin,
  stdout = process.stdout;
/*
stdin.on('data',(data)=>{
  stdout.write(data.toString('utf8').toUpperCase());
});
*/



stdin.push('is beautiful');
//可读流关闭
//stdin.push(null);

for(let c='a'.charCodeAt(0) ; c<= 'z'.charCodeAt(0) ; c++){
  stdin.push(String.fromCharCode(c));
}

stdin.pipe(stdout);
//stdin.pipe(transform).pipe(stdout);

